Saw this gem headlined – Sudden stratospheric warming responsible for UK’s icy blast – which contrives to blame cold wintry conditions on warming without mentioning (in 475 words), that the temperature fluctuations in the stratosphere are associated with migration of the jetstream.
But if you listen to the video explanation by Peter Gibb you will see he does refer to the polar jet.
BBC readers in a hurry who just scan the headline and move on without taking time to watch the video could take away a message that would please the IPCC.

If you look at NASA satellite data around 21Km and the next altitude up, and compare the coolest year since 2001 (namely 2008) with the warmest year (2010) you will see absolutely no significant difference.